I just got a MacBook Pro, and different from my iMac is that I'll be using the lock-screen much more on this one.

I noticed that in the upper right corner of the lock screen, the time is shown, but it is in 12-hour mode with AM/PM indicators.

I guess this is some remnant of the machine having been configured to use english language as the main language (I'm a developer, I don't want to have to fight with badly worded Norwegian translations of error messages on google).

I have configured my main user to have normal Norwegian formats for everything, but I guess that on the lock (and possibly on the logon screen as well?) screen, there is some kind of global system-wide configuration in use.

So, can I:

Configure the lock screen (or the system wide configuration) to use 24-hour clock?

I know this is nitpicking, you can tell that I get along with my MBP if this is the kind of things I'm worried about :) But still... AM/PM indicators annoy me (mostly because I've never taken the time [no pun intended] to learn them properly)
– Lasse Vågsæther KarlsenOct 16 '11 at 15:25

This definitely sounds like a bug (I just repro'd it on my computer). Please file a bug report at bugreport.apple.com
– Dave DeLongOct 16 '11 at 16:01